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Cixi City,Zhejiang,China 315300
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No.67,Xinhua Road, Xiaolin Town,
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DH-P-AP PTFE with Aramid Corner Gland Packing represents the pinnacle of sealing technology, combining the exceptional chemical resistance of PTFE with the outstanding mechanical strength of aramid fibers. This innovative composite packing is engineered to deliver superior performance in the most challenging industrial environments.
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Performance | Value |
Maximum Temperature | 240 ℃ |
Maximum Linear Velocity | 10m/s |
PH | 0-14 |
The DH-P-AP PTFE-with-Aramid Corner Gland Packing is a hybrid dynamic seal designed for high-pressure reciprocating equipment, featuring a PTFE core and aramid fiber-reinforced corners. Manufactured via 4-corner braiding technology, it combines PTFE’s low friction with aramid’s structural strength. Compliant with DIN 3760 and ISO 6162 standards, it is available in standard cross-sections (3mm-18mm) and custom sizes up to 50mm, packaged in 5m/10m spools with humidity indicators.
Structural Design: Aramid fiber corners (25% by volume) enhance anti-extrusion resistance; PTFE core ensures chemical inertness.
Temperature Range: Continuous -200℃ to +260℃, intermittent 280℃; no brittleness at -196℃.
Pressure Capacity: Handles 22MPa (reciprocating) and 14MPa (rotating) – 30% higher than pure PTFE packing.
Friction Performance: Coefficient of friction ≤ 0.06 (lubricated), reducing power consumption by 12% vs. aramid packing.
Media Compatibility: Resists oils, fuels, coolants, and most chemicals; volume swell < 2% in 150℃ hydraulic oil.
Hydraulic Systems: Industrial press cylinders (20MPa), injection molding machine plungers.
Automotive Manufacturing: Stamping press ram seals, robotic arm hydraulic shafts.
Aerospace: Aircraft landing gear hydraulic cylinders, ground support equipment pumps.
Metalworking: Hydraulic press brakes, forging machine hydraulic seals.
Aramid corners (meta-aramid, tensile strength 210MPa) prevent extrusion in high-pressure gaps (>0.3mm), a common failure point for pure PTFE packing. In 20MPa reciprocating applications, extrusion rate drops from 15% (pure PTFE) to 3% (DH-P-AP).
Cut packing rings with 45° diagonal cuts (opposing directions for each ring).
Install without stretching; ensure aramid corners align with flange gaps.
Compress to 18-22% of original thickness; avoid over-tightening (causes shaft wear).
Run at 50% load for 2 hours to seat the packing.
In 20MPa, 120℃ hydraulic oil (mineral-based), service life averages 30 months – 50% longer than pure PTFE packing. Replace when friction coefficient exceeds 0.10 or leakage exceeds 0.15 ml/min.
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